You are joking right? The Castle Doctrine does not say that you may summarily execute someone in your house. It says that you have no duty to retreat before using lawful self defense in your home.
[/quote]
The whole reason people object to those types of laws is that they believe it makes it too easy to claim self-defense and get away with it, even it if wasn’t actually self-defense. If you have a duty to flee, you have to come up with a scenario where fleeing was not possible, which would be hard if the deceased is found in a place, shot from a direction where the person could have fled or at least hid.
I don’t really get why there shouldn’t be some duty to retreat inside of one’s home.